QGIS ARR to TUFLOW: Difference between revisions

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Revision as of 16:25, 21 October 2024 view source Chris Huxley (talk \| contribs) Bureaucrats, Administrators 7,789 edits →Rainfall Losses ← Older edit		Latest revision as of 16:34, 1 June 2026 view source ElizaCollison (talk \| contribs) Bureaucrats, Administrators 3,910 edits →LIMB Data and Climate Change
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Line 1: The ARR to TUFLOW utility has been developed to help users set up a TUFLOW model that uses Australian Rainfall and Runoff (ARR) input parameters and the Australian Bureau of Meteorology (BOM) rainfall by automating the collection and processing of the data. The inputs and outputs of the tool are explained in detail below. '''''Note:''''' this tool helps with data processing, however is not a substitute to reading ARR. Similarly this wiki page discusses the use of the tool and the options, however context should be derived from ARR directly. Please see the [https://arr.ga.gov.au/arr-guideline\| ARR Website] for more information.~~<br>~~<br> __TOC__▼ <br> ▲__TOC__ =Getting Started= ===Installation=== Line 80 ⟶ 81: =Additional Options= ===Climate Change=== Climate change options can be added by clicking on '''Edit''' under the climate change section. This opens up a table widget that the user can then add/remove climate change scenarios based on the guidance in ARR v4.2. Once a user adds a scenario (green plus), they can double click on the values to change them. For example, double clicking on SSP2-4.5 under the 'SSP' heading will show the available Shared Socioeconomic Pathway (SSP) options. Scenarios added in the table will be displayed in the climate change section (underneath the edit button). Note: each scenario name must be unique and generally the table widget will force unique names. The scenario names will be used throughout the outputs and the user is free to customise the scenario names as they want.<br> The table columns within the table widget are based on ARR guidelines v4.2 and the examples presented in Book 1, Chapter 6. Please note the following assumptions:<br> Line 86 ⟶ 87: * Medium-term horizon = 2050 * Long-term horizon = 2090 * Temperature Change - Setting this to -1 will adopt the temperature changes output in the climate change part of the ARR datahub download. If a value orof zero or greater is set by the user, this will be adopted instead of the datahub values and it will be assumed that these are changes relative to the pre-industrial period. Note: the temperature change will be stopped from going negative within the calculation. Line 97 ⟶ 98: ''<scen_name>_rainfall_depths.csv'' ''<scen_name>_losses.csv''<br><br> [[File: ~~ARR_dialog_climate_change_01a~~ARR_dialog_climate_change_01b.png]]<br><br> [[File: ARR_example_climate_change_rf_inflow_01a.png\|1200px]] <br><br> [[File: ARR_example_climate_change_tef_01a.png]] <br><br> ====LIMB Data and Climate Change==== The LIMB sub-daily rainfall data midpoint is 2002, which differs from the ARR baseline period of 1990. Below is a worked example of applying a baseline change in the tool for the <b>Near term</b> and <b>SSP2-4.5</b> scenario. Note, this is not required for daily or longer rainfall durations. Reference document:<br> <b><u>https://data.arr-software.org/static/pdf/LIMB_Addendum_climate_change_considerations.pdf</u></b> <ol> <li> Calculate the difference in temperature, comparing the ARR values to the LIMB values: <ol> <li> From [https://www.arr-software.org/pdfs/ARR_190514_V4.2.pdf ARR v4.2] Book 1, Chapter 6, Table 1.6.2: Temperature change = <b>1.2</b> <li> From the LIMB reference document above, Table 3: Temperature change = <b>0.66</b> <li> Therefore, baseline temperature change = <b>0.54</b> </ol> <li> Update the "Baseline Change" value in the climate change dialog within the ARR to TUFLOW tool.<br> [[File:Climate_change_scenario_dialog_limb_baseline_change.png]] <li> Run the tool and check that the climate change uplift factors match the values referenced in the [https://data.arr-software.org/static/pdf/LIMB_Addendum_climate_change_considerations.pdf LIMB reference document Appendix A tables]. </ol> ===Temporal Patterns=== Line 126 ⟶ 146: ===Rainfall Losses=== The following sections summarise the available loss options. Please note, as recommended in ARR2019, <u>[https://data.arr-software.org/ ARR datahub]</u> losses are only intended for rural use. They are ~~NOT~~not ~~FOR~~for ~~DIRECT~~direct ~~USE~~use in urban areas. Furthermore, applications in New South Wales and Victoria should consider the following jurisdiction specific guidance: * <u>[https://data.arr-software.org/nsw_specific NSW Specific Guidance]</u> * <u>[https://data.arr-software.org/vic_specific VIC Specific Guidance]</u> Line 190 ⟶ 210: The user can choose to output the complete storm (preburst + design burst) rather than just the design burst by checking on the following option (please see ARR Book 2 Chapter 5 [Section 5.9.9] for more information):<br> [[File: ARR_complete_storm_checkbox_01a.png]]<br> The complete storm generated by the tool will be the preburst depth (from the '''Preburst percentile''' extracted from the datahub) plus the design burst. The user will be required to select a preburst temporal pattern from the options listed below. The options below have been included at the request of users and are not a direct reference to any specific methodology outline in ARR. If you would like to see another method included, please email ~~<b>~~<u>[mailto:support@tuflow.com support@tuflow.com]</u~~></b~~>.<br> Currently the ARR to TUFLOW tool supports the following preburst temporal pattern methods: * '''Constant Rate''' - This will apply the preburst depth equally over a given time period. The time period can be specified as an absolute time (either as minutes or hours) or proprotional to the design storm e.g. a proportional value of 0.5 will apply a 30 min preburst to a 1 hr storm and a 15 min preburst to a 30 min storm.